# SDR DXTA2015072406047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2015
- Submitted: July 24, 2015
- Operation: Air carrier
- Aircraft: [N803QS](https://openairdocs.org/aircraft/N803QS), registered now
- Make and model: Cessna 560CESSNA
- Aircraft serial: 5600775
- Aircraft time: 5,012 hours, 4,059 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Switch
- Part number: 7468331
- Condition: Failed
- Location: Acm Overtemp
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2015072406047

## Discrepancy

AT FLIGHT LEVEL 430, THE EMERGENCY PRESSURIZATION ANNUNCIATOR ILLUMINATED & PRESSURIZATION RATE SURGED, FOLLOWED BY CABIN ALTITUDE WARNING ANNUNCIATOR LIGHT ON.  CABIN ALTITUDE REACHED APPROX 11500 FT. AN  EMERGENCY DECENT WAS EXECUTED.  CABIN ALTITUDE ANNUNCIATOR EXTINGUISHED AT ABOUT 16000 FT & SYS FUNCTIONED NORMAL.  REPLACED ACM OVERTEMP SWITCH IAW MM 21-30-01.  LEAK & OPS CHECKED GOOD.

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